面向双级旋流燃烧器的10kHz滤波瑞利散射测温和CH_(2)OPLIF测量研究  

Investigation of 10 kHz Filtered Rayleigh Scattering and CH_(2)O Planar LaserInduced Fluorescence Measurement in Two-Stage Swirl Combustor

作　　者：殷盛铭 费智勇 李林烨 王绍杰 徐亮亮 林阳 王晟[2] 叶景峰[2] 夏溪 顾明明 齐飞[1] Shengming Yin;Zhiyong Fei;Linye Li;Shaojie Wang;Liangliang Xu;Yang Lin;Sheng Wang;Jingfeng Ye;Xi Xia;Mingming Gu;Fei Qi(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;State key laboratory of laser interaction with matter,Northwest Institute of Nuclear Technology,Xi'an 710024,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240 [2]西北核技术研究所激光与物质相互作用国家重点实验室,西安710024

出　　处：《Chinese Journal of Chemical Physics》2024年第2期162-170,I0101,共10页化学物理学报（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(No.52206222,No.22227901);State Key Laboratory of Laser Interaction with Matter Foundation(SKLLIM2009).

摘　　要：本文开展了常压下双级径向分层旋流燃烧器内旋流火焰的二维温度场及甲醛浓度场测量研究,发展了10kHz测量频率的滤波瑞利散射测温技术.首先,借助Hencken平面火焰炉构建了滤波瑞利散射信号与温度的校准关系.基于校准后的滤波瑞利散射系统,获得了旋流火焰的二维温度场数据:实验分析主要聚焦于甲烷-空气混合物在不同当量比(0.65至1.05)下的温度场变化.在当量比为0.85的单旋流火焰中,观察到火焰形状由V形向M形的转变,这归因于热扩散效应与空气热传导效应的相互作用.此外,在双旋流火焰中,研究发现相同运行条件下,值班火焰与主火焰在燃烧过程中发生从融合到分层的变化.本文详细描述了双旋流火焰分层现象期间的相平均温度场分布,并与瞬时CH_(2)O分布进行了对比.We present an exploration of twodimensional flame thermometry and CH_(2)O field measurement in a swirling flame within a two-stage radial stratified swirl combustor,operating under atmospheric pressure conditions.The research details the calibration and analysis of filtered Rayleigh scattering(FRS)signal intensity,employing a planar flame from a Hencken burner to establish a calibration curve for the FRS signal ratio and temperature.The 2-D temperature field results for the swirling flame are then showcased,all obtained using the calibrated FRS system.Parametric analysis focuses on the temperature fields of methane/air mixtures with equivalence ratios ranging from 0.65 to 1.05.The flame shape changes from V-shape to Mshape for a single-swirling flame with an equivalence ratio of 0.85,and that this change in shape is due to a combination of thermal diffusion effects and air-conducting effects.Furthermore,in the dual-swirling flame,the study identifies a transition from mergence to stratification during combustion in both the pilot and main stage flames under the same operating conditions.The article concludes by presenting and comparing the phase-averaged temperature field distributions and instantaneous CH_(2)O distributions during the stratified phenomena of the dual-swirling flame.

关 键 词：滤波瑞利散射 平面激光诱导荧光 双级径向分层旋流燃烧 器 旋流火焰 温度场 

分 类 号：O64[理学—物理化学]